Results 91 to 100 of about 10,092 (232)

A Synthetic Approach Toward a Brominated Oxocane Labdane Diterpenoid Isolated From

open access: yesNatural Product Communications, 2020
The synthesis of a labdane oxocane epoxy-alcohol is described starting from the Wieland–Miescher ketone derivative via ring closing olefin metathesis of a diene derivative, targeting the total synthesis of a brominated oxocane labdane diterpenoid ...
Hisahiro Hagiwara   +4 more
doaj   +1 more source

Mechanistic and Reactivity Insights into Diboron‐Mediated NN and NN Bond Scission

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
This review highlights the emerging ability of diboron reagents to cleave both π‐bonded (N=N) and σ‐bonded (N—N) nitrogen–nitrogen linkages, integrating mechanistic understanding with recent synthetic applications. Diboron reagents have emerged as versatile reducing agents capable of transforming a broad range of functional groups through pathways like
Raúl Valderrama‐Callejón   +2 more
wiley   +1 more source

Lithium Diisopropylamide‐Mediated Ring‐Opening of Tetrahydrofuran in the Synthesis of Polyhydroxylated Indolizidines

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Chiral tri‐ and pentahydroxy spirocyclopentane‐indolizidines were synthesized using lithium diisopropylamide “LDA” promoted diallylation and tetrahydrofuran “THF” ring‐opening in a one‐pot procedure as a key step. The sequence leading to the targeted hydroxy‐spiroindolizidines was achieved by cis‐dihydroxylation followed by reduction of the enamine and
Paula Fraňová   +6 more
wiley   +1 more source

Well‐Defined Anilido–Imine Iron(II) Complexes for Catalytic Intramolecular Alkene Hydroamination of Primary Amines

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
We synthesize and characterize a series of well‐defined anilido–imine Fe(II) alkyl complexes that demonstrate high activity and selectivity in the cyclohydroamination of unprotected primary amines tethered to unactivated alkenes. By tuning the steric and electronic parameters of the anilido–imine ligand, we develop a catalyst that outperforms ...
Hui Dong   +5 more
wiley   +1 more source

Design and synthesis of ruthenium indenylidene-based catalysts for olefin metathesis

open access: yes, 2013
As part of a European wide effort to develop metathesis catalysts for use in fine chemical and pharmaceutical compound synthesis, this study focuses on the design and synthesis of ruthenium based catalysts for olefin metathesis.
Urbina-Blanco, César A.
core  

A reação de metátese de olefinas: reorganização e ciclização de compostos orgânicos The olefin metathesis reaction: reorganization and ciclization of organic compounds

open access: yesQuímica Nova, 2005
The olefin metathesis reaction allows the exchange of complex alkyl units between two olefins, with the formation of a new olefinic link and a sub-product olefin usually ethylene.
Daniel Frederico   +2 more
doaj   +1 more source

Biobased Epoxidized Castor Oil Covalent Adaptable Networks Adhesives Reinforced with Recycled Carbon Fibers

open access: yesMacromolecular Rapid Communications, EarlyView.
It is reported the design of biobased sustainable, smart, and functional adhesives achieved dispersing recycled carbon fibers into biobased epoxy monomer. ABSTRACT The development of sustainable, smart, and functional adhesives is crucial in advancing environmentally friendly materials.
Alberto Cellai   +6 more
wiley   +1 more source

Diverse reactivity of maleimides in polymer science and beyond

open access: yesPolymer International, Volume 74, Issue 4, Page 296-306, April 2025.
This mini‐review provides a thorough overview of maleimide chemistry, highlighting its diverse reactivity in polymer and materials science applications. Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder and (photo)cycloadditions, Michael additions, and other reactions ...
Bruce E Kirkpatrick   +2 more
wiley   +1 more source

Molecular Iodine-Catalyzed Carbonyl-Olefin Metathesis

open access: yes, 2018
The carbonyl-olefin metathesis reaction is a synthetically valuable transformation that could facilitate rapid functional group interconversion and construction of new organic structures.
Kevin, Liyanto   +5 more
core   +1 more source

Olefin metathesis in multiblock copolymer synthesis

open access: yesBeilstein Journal of Organic Chemistry, 2019
Multiblock copolymers constitute a basis for an emerging class of nanomaterials that combine various functional properties with durability and enhanced mechanical characteristics. Our mini-review addresses synthetic approaches to the design of multiblock
Maria L. Gringolts   +3 more
doaj   +1 more source

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